All key metrics for the company were weak, underscoring
concerns on Wall Street of rising competition and slowing
growth for MetroPCS, which had earlier this year expanded into
major new markets such as New York and Boston. Its rivals
include Leap Wireless LEAP.O and Sprint-Nextel (S.N: Cotización) unit
Boost Mobile.

Second-quarter average revenue per user (ARPU) at MetroPCS
fell to $40.52 and churn rate, a measure of customer attrition,
rose to 5.8 percent.
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